Overview

Effective SQL brings together practical solutions and insights so you can solve complex problems with SQL and design databases that simplify data management in the future. It’s the only modern book that brings together advanced best practices and realistic example code for all of these versions of SQL: IBM DB2, Microsoft Access, Microsoft SQL Server, MySQL, Oracle Database, and PostgreSQL. Drawing on their immense experience as world-class database consultants and instructors, the authors identify 61 proven approaches to writing better SQL. Wherever SQL versions vary, the authors illuminate the key nuances, so you can get the most out of whatever version you prefer. This full-colour guide provides clear, practical explanations; expert tips; and plenty of usable code. Going far beyond mere syntax, it addresses issues ranging from optimising database designs to managing hierarchies and metadata. If you already know SQL’s basics, this guide will help you become a world-class SQL problem-solver. Craft better logical data models, and fix flawed models Implement indexes that improve query performance Handle external data from sources you don’t control Extract and aggregate the information you need, as efficiently as possible Write more flexible subqueries Analyse and retrieve metadata using your database platform of choice Use Cartesian Products and Tally Tables to solve problems you can’t address with conventional JOINs Model hierarchical data: managing SQL’s tradeoffs and shortcomings

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9780134578897

Table of Contents

Reviews

Given the reputation of the authors, I expected to be impressed. Impressed doesn't cover it, though. I was blown away! Most SQL books tell you 'how.' This one tells you 'why.' Most SQL books separate database design from implementation. This one integrates design considerations into every facet of SQL use. Most SQL books sit on my shelf. This one will live on my desk. -Roger Carlson, Microsoft Access MVP (2006-2015) It can be easy to learn the basics of SQL, but it is very difficult to build accurate and efficient SQL, especially for critical systems with complex requirements. But now, with this great new book, you can get up to speed and write effective SQL much more quickly, no matter which DBMS you use. - Craig S. Mullins, Mullins Consulting, Inc., DB2 Gold Consultant and IBM Champion for Analytics This is a great book. It is written in language that can be understood by a relative beginner and yet contains tips and tricks that will benefit the most hardened workhorse. It will therefore appeal to readers across the whole range of expertise and should be in the library of anybody who is seriously concerned with designing, managing, or programming databases. -Graham Mandeno, database consultant and Microsoft MVP (1996-2015) This book is an excellent resource for database designers and developers working with relational and SQL-based databases-it's an easy read with great examples that combine theory with practical examples seamlessly. Examples for top relational databases Oracle, DB2, SQL Server, MySQL, and PostgreSQL are included throughout. The book walks the reader through sophisticated techniques to deal with things such as hierarchical data and tally tables, along with explanations of the inner workings and performance implications of SQL using GROUP BY, EXISTS, IN, correlated and non-correlated subqueries, window functions, and joins. The tips you won't find anywhere else, and the fun examples help to make this book stand out from the crowd. -Tim Quinlan, database architect and Oracle Certified DBA This book is good for those who need to support multiple dialects of SQL. It's divided up into stand-alone items that you just grab and go. I have been doing SQL in various flavors since 1992 and even I picked up a few things. -Tom Moreau, Ph.D., SQL Server MVP (2001-2012) This book is a powerful, compact, and easily understandable presentation of how to use SQL-it shows the application of SQL to real-world questions in order to teach the construction of queries, and it explains the relationship of 'how data is stored' to 'how data is queried' so that you obtain results successfully and effectively. -Kenneth D. Snell, Ph.D., database consultant and former Microsoft Access MVP It has been problematic for many that there is no book on going from a novice database administrator to a much more advanced status until now. Effective SQL is a road map, a guide, a Rosetta Stone, and a coach on moving from basic Structured Query Language (SQL) to much more advanced uses to solve real-world problems. Rather than stumble around reinventing the wheel or catching glimpses of the proper ways to use a database, do yourself a favor and buy a copy of this book. Not only will you see many different approaches it would take years to see as a database consultant, but you will get a detailed understanding of why the databases of many vendors do what they do. Save time, effort, and wear and tear on your walls from banging your head against them and get this book. -Dave Stokes, MySQL Community Manager, Oracle Corporation Effective SQL is a 'must have' for any serious database developer. It shows how powerful SQL can be in solving real-world problems in a step-by-step manner. The authors use easy-to-understand language in pointing out every advantage and disadvantage of each solution presented in the book. As we all know, there are multiple ways of accomplishing the same thing in SQL, but the authors explain why a particular query is more efficient than others. The part I liked best about the book is the summary at the end of each section, which reemphasizes the take-away points and reminds the reader which pitfalls to avoid. I highly recommend this book to all my fellow database developers. -Leo (theDBguy (TM)), UtterAccess Moderator and Microsoft Access MVP I think this is the book that is relevant not only for developers, but also for DBAs, as it talks about writing efficient SQL and various ways of achieving a desired result. In my opinion, this is a must-have book. Another reason to have this book is that it covers most of the commonly used RDBMSs, and so if someone is looking to transition from one RDBMS to another, this is the book to pick up. The authors have done a fantastic job. My heartiest congratulations to them. -Vivek Sharma, technologist, Hybrid Cloud Solutions, Core Technology and Cloud, Oracle Asia Pacific

Given the reputation of the authors, I expected to be impressed. Impressed doesn't cover it, though. I was blown away! Most SQL books tell you 'how.' This one tells you 'why.' Most SQL books separate database design from implementation. This one integrates design considerations into every facet of SQL use. Most SQL books sit on my shelf. This one will live on my desk. -Roger Carlson, Microsoft Access MVP (2006-2015) It can be easy to learn the basics of SQL, but it is very difficult to build accurate and efficient SQL, especially for critical systems with complex requirements. But now, with this great new book, you can get up to speed and write effective SQL much more quickly, no matter which DBMS you use. - Craig S. Mullins, Mullins Consulting, Inc., DB2 Gold Consultant and IBM Champion for Analytics This is a great book. It is written in language that can be understood by a relative beginner and yet contains tips and tricks that will benefit the most hardened workhorse. It will therefore appeal to readers across the whole range of expertise and should be in the library of anybody who is seriously concerned with designing, managing, or programming databases. -Graham Mandeno, database consultant and Microsoft MVP (1996-2015) This book is an excellent resource for database designers and developers working with relational and SQL-based databases-it's an easy read with great examples that combine theory with practical examples seamlessly. Examples for top relational databases Oracle, DB2, SQL Server, MySQL, and PostgreSQL are included throughout. The book walks the reader through sophisticated techniques to deal with things such as hierarchical data and tally tables, along with explanations of the inner workings and performance implications of SQL using GROUP BY, EXISTS, IN, correlated and non-correlated subqueries, window functions, and joins. The tips you won't find anywhere else, and the fun examples help to make this book stand out from the crowd. -Tim Quinlan, database architect and Oracle Certified DBA This book is good for those who need to support multiple dialects of SQL. It's divided up into stand-alone items that you just grab and go. I have been doing SQL in various flavors since 1992 and even I picked up a few things. -Tom Moreau, Ph.D., SQL Server MVP (2001-2012) This book is a powerful, compact, and easily understandable presentation of how to use SQL-it shows the application of SQL to real-world questions in order to teach the construction of queries, and it explains the relationship of 'how data is stored' to 'how data is queried' so that you obtain results successfully and effectively. -Kenneth D. Snell, Ph.D., database consultant and former Microsoft Access MVP It has been problematic for many that there is no book on going from a novice database administrator to a much more advanced status until now. Effective SQL is a road map, a guide, a Rosetta Stone, and a coach on moving from basic Structured Query Language (SQL) to much more advanced uses to solve real-world problems. Rather than stumble around reinventing the wheel or catching glimpses of the proper ways to use a database, do yourself a favor and buy a copy of this book. Not only will you see many different approaches it would take years to see as a database consultant, but you will get a detailed understanding of why the databases of many vendors do what they do. Save time, effort, and wear and tear on your walls from banging your head against them and get this book. -Dave Stokes, MySQL Community Manager, Oracle Corporation Effective SQL is a 'must have' for any serious database developer. It shows how powerful SQL can be in solving real-world problems in a step-by-step manner. The authors use easy-to-understand language in pointing out every advantage and disadvantage of each solution presented in the book. As we all know, there are multiple ways of accomplishing the same thing in SQL, but the authors explain why a particular query is more efficient than others. The part I liked best about the book is the summary at the end of each section, which reemphasizes the take-away points and reminds the reader which pitfalls to avoid. I highly recommend this book to all my fellow database developers. -Leo (theDBguy(TM)), UtterAccess Moderator and Microsoft Access MVP I think this is the book that is relevant not only for developers, but also for DBAs, as it talks about writing efficient SQL and various ways of achieving a desired result. In my opinion, this is a must-have book. Another reason to have this book is that it covers most of the commonly used RDBMSs, and so if someone is looking to transition from one RDBMS to another, this is the book to pick up. The authors have done a fantastic job. My heartiest congratulations to them. -Vivek Sharma, technologist, Hybrid Cloud Solutions, Core Technology and Cloud, Oracle Asia Pacific

Author Information

John L. Viescas is an independent database consultant with more than 45 years of experience. He began his career as a systems analyst, designing large database applications for IBM mainframe systems. He spent six years at Applied Data Research in Dallas, Texas, where he directed a staff of more than 30 people and was responsible for research, product development, and customer support of database products for IBM mainframe computers. While working at Applied Data Research, John completed a degree in business finance at the University of Texas at Dallas, graduating cum laude. John joined Tandem Computers, Inc., in 1988, where he was responsible for the development and implementation of database marketing programs in Tandem’s U.S. Western Sales region. He developed and delivered technical seminars on Tandem’s relational database management system, NonStop SQL. John wrote his first book, A Quick Reference Guide to SQL (Microsoft Press, 1989), as a research project to document the similarities in the syntax among the ANSI-86 SQL standard, IBM’s DB2, Microsoft’s SQL Server, Oracle Corporation’s Oracle, and Tandem’s NonStop SQL. He wrote the first edition of Running Microsoft® Access (Microsoft Press, 1992) while on sabbatical from Tandem. He has since written four editions of Running, three editions of Microsoft® Office Access Inside Out (Microsoft Press, 2003, 2007 and 2010—the successor to the Running series), and Building Microsoft® Access Applications (Microsoft Press, 2005). He is also the best-selling author of SQL Queries for Mere Mortals®, Third Edition (Addison-Wesley, 2014). John currently holds the record for the most consecutive years being awarded MVP from Microsoft, having received the award from 1993-2015. John makes his home with his wife of more than 30 years in Paris, France. Douglas J. Steele has been working with computers, both mainframe and PC, for almost 45 years. (Yes, he did use punch cards in the beginning!) He worked for a large international oil company for more than 31 years before retiring in 2012. Databases and data modeling were a focus for most of that time, although he finished his career by developing the SCCM task sequence to roll Windows 7 out to over 100,000 computers worldwide. Recognized by Microsoft as an MVP (Most Valuable Professional) for more than 16 years, Doug has authored numerous articles on Access, was co-author of Access Solutions: Tips, Tricks, and Secrets from Microsoft Access MVPs (Wiley Publishing, 2010), and has been technical editor for a number of books. Doug holds a master’s degree in systems design engineering from the University of Waterloo (Ontario, Canada), where his research centered on designing user interfaces for non-traditional computer users. (Of course, this was in the late ’70s, so few people were traditional computer users at the time!) This research stemmed from his background in music (he holds an associateship in piano performance from the Royal Conservatory of Music, Toronto). He is also obsessed with beer, and is a graduate of the brewmaster and brewery operations management program at Niagara College (Niagara-on-the-Lake, Ontario). Doug lives with his lovely wife of more than 34 years in St. Catharines, Ontario. Doug can be reached at AccessMVPHelp@gmail.com. Ben G. Clothier is a Solution Architect with IT Impact, Inc., a premier Access and SQL Server development shop based in Chicago, Illinois. He has worked as a freelance consultant with notable shops including J Street Technology and Advisicon, and has worked on Access projects from small, one-man solutions to company-wide line of business applications. Notable projects include job tracking and inventory for a cement company, a Medicare insurance plan generator for an insurance provider, and order management for an international shipping company. Ben is an administrator at UtterAccess and was a coauthor, with Teresa Hennig, George Hepworth and Doug Yudovich of Microsoft® Access 2013 Programming (Wiley 2013), and with Tim Runcie and George Hepworth, of Microsoft® Access in a SharePoint World (Advisicon, 2011), and a contributing author for Access 2010 Programmer’s Reference (Wiley, 2010). He holds certifications for Microsoft SQL Server 2012 Solution Associate and MySQL 5.0 Certified Developer, among others. He has been a Microsoft MVP since 2009. Ben lives in San Antonio, Texas, with his wife, Suzanne, and his son, Harry.

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